91675679 has 4 divisors (see below), whose sum is σ = 97068384. Its totient is φ = 86282976.

The previous prime is 91675667. The next prime is 91675687. The reversal of 91675679 is 97657619.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91675679 is a prime.

It is a super-2 number, since 2×91675679² = 16808860240222082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91675609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2696327 + ... + 2696360.

It is an arithmetic number, because the mean of its divisors is an integer number (24267096).

Almost surely, 2^91675679 is an apocalyptic number.

91675679 is a deficient number, since it is larger than the sum of its proper divisors (5392705).

91675679 is a wasteful number, since it uses less digits than its factorization.

91675679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5392704.

The product of its digits is 714420, while the sum is 50.

The square root of 91675679 is about 9574.7417197541. The cubic root of 91675679 is about 450.9046476325.

The spelling of 91675679 in words is "ninety-one million, six hundred seventy-five thousand, six hundred seventy-nine".